Backlight module and display device

Abstract

A backlight module including a light source, a reflector, a chamber, and a block plate is provided. The light source has at least one light unit arranged along a first direction. The reflector extends along the first direction and a curve opposite the light unit is formed on a cross section perpendicular to the first direction. The reflector has a first end and a second end opposite to each other. The first end extends toward the light source while the second end forms a light exit with the light source. The chamber has a light entrance end facing the light exit to receive light reflected by the reflector. The block plate is disposed between the light unit and a light-receiving surface of the chamber to reduce the light directly reflected to the light-receiving surface of the chamber by the reflector.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a backlight module having a reflector and a display device using the same, and specifically to a backlight module having a reflector with a step structure and a display device using the same.BACKGROUND OF THE INVENTION[0002]Flat and curved display devices are widely applied to various electronic devices, such as mobile phones, personal wearable devices, televisions, in-vehicle devices, personal computers, digital cameras, handheld game consoles, and the like. However, with the improvement of specifications such as resolution and narrow bezel, the optical design in the display device also faces challenges.[0003]Take liquid crystal display devices for example. Optical performance of a liquid crystal display is usually closely related to a backlight module disposed behind the display panel. A conventional backlight module can be roughly divided into two types: edge type backlight module and direct type backlight module. One t...

AI Technical Summary

Benefits of technology

The present invention provides a backlight module and display device that can improve the local light band problem. A block plate is placed between the light unit and the light-receiving surface, which reduces the amount of light emitted from the light exit that is reflected back to the chamber by the reflector. This decreases the amount of light that is collected on the side of the chamber closest to the light entrance end.

Problems solved by technology

However, with the improvement of specifications such as resolution and narrow bezel, the optical design in the display device also faces challenges.

However, this type of backlight module may produce a bright band on a side of the display area close to the light unit, thereby causing problems in use.

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